Are you sure? Earlier you've said that's the version Qt Creator was based on (which is not relevant info for this topic).

If yes, then hm... it should work. QtQuick.Dialogs are available since Qt 5.1. Are you importing both qml and quick in your .pro file?QT += qml quick You probably are, but I don't have any other ideas that that your installation is somehow broken.

@sierdzio I have included the variables qml quick in qt variable. I have tried reinstalling the qt creator and even upgraded the qt to qt 5.9.1 and still this is not working. Is there anything to do with the system I am using for development?